ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,624, issued on March 3, was assigned to IDEMITSU KOSAN Co. LTD. (Tokyo).
"Grease composition" was invented by Go Watanabe (Chiyoda-ku, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a grease composition containing a base oil (A), a urea-based thickener (B), and a hardening agent for fat and/or fatty oil (C), in which particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I), liquefy when heated to a certain temperature or higher, return to a solid state when returned to ordinary temperature after heated to a certain temperature or higher, have high responsiveness to applicatio...